Given the lack of specific data points such as selling prices, offers accepted, and listed prices of similar cars, I will use the new car price and apply depreciation logic. Assuming a new 2021 Mercedes GLA35 AMG I4 2.0L Turbo Charged Standard SUV costs around 250,000 SAR, and considering a depreciation rate of 10% per year, the car would depreciate by 25,000 SAR per year. For a 3-year-old car, the total depreciation would be 75,000 SAR. Therefore, the estimated price would be 250,000 SAR - 75,000 SAR = 175,000 SAR.